A complete one-loop description of associated tW production at LHC and an estimate of possible genuine supersymmetric effects

Abstract

We compute, in the MSSM framework, the sum of the one-loop electroweak and of the total QED radiation effects for the process $pp\to tW+X$, initiated by the parton process $bg\to tW$. Combining these terms with the existing NLO calculations of SM and SUSY QCD corrections, we analyze the overall one-loop supersymmetric effects on the partial rates of the process, obtained by integrating the differential cross section up to a final variable invariant mass. We conclude that, for some choices of the SUSY parameters and for relatively small final invariant masses, they could reach the relative ten percent level, possibly relevant for a dedicated experimental effort at LHC.

Title changed. Final version published in Eur. Phys. J. C

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